A tractor hitch

Abstract

The utility model provides a tractor traction device relates to tractor traction device field, the utility model discloses a drawbar, two traction frames and two limit bolts, the both ends of drawbar are fixed in the inner wall of two traction frames with the help of two limit bolts, the both ends inner wall of drawbar all is provided with lubricating device, the utility model discloses a lubricating device is set up, can start oil pump and take the lubricating oil in the inside of oil drum into the flow guide frame and a plurality of flow guide pipes in tractor traction operation, like this when the both ends inner wall of drawbar rotates respectively on two limit bolts, will drive the rotation of the ball on flow guide pipe and take out the lubricating oil in its inside, smears on the surface of limit bolt, to this reduces the rotation wear and tear between both, reduces the rotation resistance between both, makes it more flexible to rotate, improves work efficiency, reduces the possibility of corrosion rust, improves the service life of both.

Description

Technical Field

[0001] This utility model relates to the field of tractor traction devices, and in particular to a tractor traction device. Background Technology

[0002] The traction device is a mechanical device installed at the rear of a tractor to connect the tractor to the towed implements or other equipment. Its main function is to transmit power from the tractor's power output to the towed equipment, enabling it to smoothly complete agricultural operations such as tilling, sowing, and harvesting.

[0003] When using a tractor to tow agricultural implements and other equipment, two drawbars are installed on one side of the tractor's tow bar and the other equipment's tow bar using bolts and nuts. Then, the two ends of the drawbar are fixed to the inner walls of the two drawbars by limiting pins, allowing the drawbar to rotate flexibly around the limiting pins to adapt to different terrains, working angles, and posture adjustments during travel, facilitating towing operations. During tractor towing operations, the drawbar and limiting pins are exposed to the elements for extended periods, making them prone to corrosion and rust. This increases contact friction, leading to accelerated wear between the two ends of the drawbar and the two limiting pins, reduced rotational flexibility, decreased work efficiency, increased maintenance costs, and shortened service life of both components. Utility Model Content

[0004] The technical problem this invention aims to solve is that during tractor traction operations, the drawbar and the limiting pins are exposed to the outside for a long time, making them prone to corrosion and rust. This leads to increased contact friction, which intensifies wear between the two ends of the drawbar and the two limiting pins, making them less flexible in rotation. Consequently, this reduces work efficiency, increases maintenance costs, and shortens the service life of both components.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: a tractor traction device, including a drawbar, two drawbar frames, and two limiting pins. The two ends of the drawbar are respectively fixed and limited in the inner walls of the two drawbar frames by means of the two limiting pins. The inner walls of both ends of the drawbar are provided with lubrication devices. The lubrication devices can inject lubricating oil into the oil tank, and then use an oil pump to draw the lubricating oil from the oil tank into the guide frame and several guide pipes. In this way, when the inner walls of both ends of the drawbar rotate on the two limiting pins, the ball bearings rotate on the guide pipes, carrying out the lubricating oil inside and coating the surface of the limiting pins, thereby reducing rotational wear between the two and achieving the effect of rust prevention and maintenance.

[0006] Preferably, the lubrication device includes an oil drum and an oil pump, wherein the inlet of the oil pump is installed through the outlet side of the oil drum, and both ends of the traction rod have grooves on one side, with a plurality of rectangular slots on one side of the inner wall of the grooves; a flow guide frame, wherein one end of the flow guide frame is fixedly installed at the outlet side of the oil pump; a plurality of flow guide pipes, wherein one end of the flow guide pipes is installed through the side of the flow guide frame, and the flow guide frame and the plurality of flow guide pipes are respectively inserted into the grooves and the plurality of rectangular slots; and a portable mechanism, wherein the portable mechanism is disposed between the oil drum and the traction rod, and between the flow guide frame and the inner wall of the groove, for limiting the installation of the oil drum and the flow guide frame on the traction rod.

[0007] The aforementioned components achieve the following effect: By incorporating a lubrication device, before installing the drawbar, the guide frame and several guide pipes are inserted into the groove and several rectangular slots respectively, and then fixed in place by a detachable mechanism. Simultaneously, an oil drum is fixed to the outer surface of the drawbar, and lubricating oil is injected into the drum. When using a tractor to pull implements and other equipment, the two drawbars are respectively installed on one side of the tractor's trailing rod and the trailing rod of the other equipment using bolts and nuts. Then, the two ends of the drawbar are fixed to the inner walls of the two drawbars using limiting pins, allowing the drawbar to rotate around the limiting pins. The locating pins rotate flexibly to adapt to different terrains, working angles, and attitude adjustments during travel, facilitating towing operations. During tractor towing, the oil pump can be activated to draw lubricating oil from the oil drum into the guide frame and several guide pipes. When the inner walls of both ends of the drawbar rotate on the two locating pins, the lubricating oil will be discharged from the outlet of the guide pipes and applied to the surface of the locating pins, thereby reducing rotational wear and resistance between them, making them rotate more flexibly, improving work efficiency, reducing the possibility of corrosion and rust, and extending the service life of both.

[0008] Preferably, the lubrication device further includes a plurality of balls, wherein the balls are rolled and installed in the inner wall of the outlet of the guide tube.

[0009] The effect achieved by the above components is that by setting the ball bearings, the amount of lubricating oil at the outlet of the guide pipe can be reduced and controlled so that the lubricating oil can only be carried out when the ball bearings are rotated, thus avoiding waste.

[0010] Preferably, the lubrication device further includes several connecting blocks, wherein the two sides of the connecting blocks are respectively fixedly installed on one side of two adjacent guide pipes; and several sponge blocks, wherein one side of the sponge blocks is fixedly installed on one side of the connecting blocks.

[0011] The effect achieved by the above components is as follows: by setting up sponge blocks and connecting blocks, several sponge blocks and several guide tubes can be distributed in an intermittent manner. In this way, when the ball bearings continue to rotate after applying lubricating oil to the limit pin, the sponge blocks will spread the lubricating oil evenly and absorb the excess lubricating oil, thus avoiding waste and improving the protective effect.

[0012] Preferably, the easy-to-disassemble mechanism includes an elastic arc-shaped block, wherein the outer surface of the elastic arc-shaped block is fixedly installed on one side of the oil drum, and the inner wall is sleeved on the outer surface of the traction rod; a sliding groove is provided on one side of the inner wall of the groove, and a locking groove is provided on one side of the groove; a locking block, wherein one end of the locking block is slidably installed in the inner wall of the sliding groove, and the other end is inserted into the inner wall of the locking groove; and a spring, wherein the two ends of the spring are respectively fixedly installed on one side of the locking block and one side of the inner wall of the sliding groove.

[0013] The aforementioned components achieve the following effects: By setting up a convenient disassembly mechanism, before installing the traction rod, the locking block is manually slid to one end of the slide groove to a certain position, causing the spring to contract. Then, the guide frame and several guide tubes are inserted into the groove and several rectangular slots respectively. At this time, the locking block is released, and under the reset action of the spring, it can be locked into the slot to limit and fix the guide frame. At the same time, the elastic arc-shaped block at the bottom of the oil drum is aligned with the outer surface of the traction rod and fitted onto it to fix it on the outer surface of the traction rod. When the oil drum needs to be replaced or maintained, it can be disassembled for convenient replacement and maintenance.

[0014] Preferably, the easy-to-disassemble mechanism further includes a telescopic rod, wherein the outer surface of the telescopic rod is inserted into the inner wall of the spring, and both ends are respectively fixedly installed on one side of the locking block and one side of the inner wall of the slide groove.

[0015] The effect achieved by the above components is that by setting up the telescopic rod, the inner wall of the spring can be supported and reinforced, making it less prone to damage during use and increasing its service life.

[0016] Preferably, the inner wall of the elastic arc-shaped block is fixedly installed with an anti-slip block, wherein the anti-slip block is made of rubber.

[0017] The effect achieved by the above components is that by setting anti-slip blocks, the contact friction of the inner wall of the elastic arc block can be increased, making it more secure when it is fitted onto the outer surface of the traction rod and less prone to shaking.

[0018] The beneficial effects of this utility model are:

[0019] By installing a lubrication device, during tractor traction operations, an oil pump can be activated to draw lubricating oil from the oil drum into the guide frame and several guide pipes. When the inner walls of both ends of the drawbar rotate on the two limit pins, they will cause the ball bearings to rotate on the guide pipes, carrying out the lubricating oil inside and coating the surface of the limit pins. This reduces rotational wear between the two, lowers the rotational resistance, makes them rotate more flexibly, improves work efficiency, reduces the possibility of corrosion and rust, and extends the service life of both components. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is a three-dimensional structural diagram of the air guide frame of this utility model;

[0023] Figure 3 for Figure 2 A three-dimensional schematic diagram of a local structure;

[0024] Figure 4 This is a three-dimensional structural diagram of the traction rod of this utility model;

[0025] Figure 5 for Figure 4 A three-dimensional schematic diagram of a local structure;

[0026] Figure 6 This is a three-dimensional structural diagram of the oil drum part of this utility model.

[0027] Legend: 1. Traction rod; 2. Lubrication device; 3. Traction frame; 4. Limit pin; 21. Oil drum; 22. Oil pump; 23. Flow guide frame; 24. Flow guide pipe; 25. Groove; 26. Rectangular groove; 27. Ball bearing; 28. Easy-to-remove mechanism; 281. Elastic arc block; 282. Slide groove; 283. Spring; 284. Locking block; 285. Locking groove; 286. Telescopic rod; 29. ​​Connecting block; 210. Sponge block. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Figure 1-6 The tractor traction device shown includes a drawbar 1, two draw frames 3, and two limiting pins 4. The two ends of the drawbar 1 are fixed and limited in the inner walls of the two draw frames 3 by means of the two limiting pins 4. The inner walls of both ends of the drawbar 1 are provided with lubrication devices 2. The lubrication devices 2 can inject lubricating oil into the oil tank 21, and then pump the lubricating oil in the oil tank 21 into the guide frame 23 and several guide pipes 24 by the oil pump 22. When the inner walls of both ends of the drawbar 1 rotate on the two limiting pins 4, the ball bearings 27 rotate on the guide pipes 24, carrying out the lubricating oil inside and coating the surface of the limiting pins 4, thereby reducing rotational wear between the two and achieving the effect of rust prevention and maintenance.

[0031] Figure 1-6The lubrication device 2 shown includes an oil drum 21 and an oil pump 22 (model WCB-30). The inlet of the oil pump 22 is installed through the outlet side of the oil drum 21. Grooves 25 are provided on one side of both ends of the traction rod 1, and several rectangular slots 26 are provided on one side of the inner wall of the groove 25. A flow guide 23 is fixedly installed at one end of the flow guide 23 on the outlet side of the oil pump 22. Several flow guide pipes 24 are installed through the flow guide 23 on one side. The flow guide 23 and the flow guide pipes 24 are respectively inserted into the grooves 25 and the rectangular slots 26. A portable mechanism is provided between the oil drum 21, the traction rod 1, and the inner wall of the flow guide 23 and the groove 25, and is used to limit the installation of the oil drum 21 and the flow guide 23 on the traction rod 1. By setting up the lubrication device 2, before installing the drawbar 1, the guide frame 23 and several guide pipes 24 are inserted into the groove 25 and several rectangular slots 26 respectively, and then fixed by the easy-to-remove mechanism 28. At the same time, the oil drum 21 is fixed to the outer surface of the drawbar 1, and lubricating oil is injected into the oil drum 21. Then, when using the tractor to pull agricultural implements and other equipment, the two drawbar frames 3 are respectively installed on one side of the tractor's trailing rod and the trailing rod of other equipment by means of bolts and nuts. Then, the two ends of the drawbar 1 are fixed to the inner walls of the two drawbar frames 3 by the limiting pins 4, so that the drawbar 1 can be rotated around the limiting pins. Pin 4 rotates flexibly to adapt to different terrains, working angles, and attitude adjustments during travel, facilitating towing operations. During tractor towing operations, oil pump 22 can be activated to draw lubricating oil from inside oil drum 21 into guide frame 23 and several guide pipes 24. Thus, when the inner walls of both ends of the drawbar 1 rotate on the two limit pins 4, lubricating oil will be discharged from the outlet of the guide pipe 24 and applied to the surface of the limit pins 4, thereby reducing rotational wear between the two, reducing rotational resistance between the two, making them rotate more flexibly, improving work efficiency, reducing the possibility of corrosion and rust, and extending the service life of both.

[0032] Figure 1-6The lubrication device 2 shown also includes several ball bearings 27, which are rolled and installed on the inner wall of the outlet of the guide pipe 24. By setting the ball bearings 27, the amount of lubricating oil at the outlet of the guide pipe 24 can be reduced and controlled so that the lubricating oil is only carried out when the ball bearings 27 rotate, thus avoiding waste. The lubrication device 2 also includes several connecting blocks 29, with their two sides fixedly installed on one side of two adjacent guide pipes 24; and several sponge blocks 210, with one side of each sponge block 210 fixedly installed on one side of a connecting block 29. By setting the sponge blocks 210 and connecting blocks 29, the sponge blocks 210 and the guide pipes 24 can be distributed in an alternating manner. This way, when the ball bearings 27 apply lubricating oil to the limiting pin 4 and continue to rotate, the sponge blocks 210 will spread the lubricating oil evenly and absorb excess lubricating oil, avoiding waste and improving the protective effect.

[0033] Figure 1-6 The disassembly mechanism 28 shown includes an elastic arc-shaped block 281, wherein the outer surface of the elastic arc-shaped block 281 is fixedly installed on one side of the oil drum 21, and the inner wall is sleeved on the outer surface of the traction rod 1. A sliding groove 282 is provided on one side of the inner wall of the groove 25, and a locking groove 285 is provided on one side of the groove 25; a locking block 284, wherein one end of the locking block 284 is slidably installed in the inner wall of the sliding groove 282, and the other end is inserted in the inner wall of the locking groove 285; and a spring 283, wherein the two ends of the spring 283 are respectively fixedly installed on one side of the locking block 284 and one side of the inner wall of the sliding groove 282. By setting up the easy-to-remove mechanism 28, before installing the traction rod 1, the locking block 284 is manually slid to one end in the slide groove 282 to a certain position, causing the spring 283 to contract. Then, the guide frame 23 and several guide tubes 24 are respectively inserted into the groove 25 and several rectangular slots 26. At this time, the locking block 284 is released, so that under the reset action of the spring 283, it can be locked into the locking slot 285 to limit and fix the guide frame 23. At the same time, the elastic arc-shaped block 281 at the bottom of the oil drum 21 is aligned with the outer surface of the traction rod 1 and put on it to fix it on the outer surface of the traction rod 1. Similarly, when the oil drum 21 needs to be replaced and maintained, it can be disassembled for easy replacement and maintenance.

[0034] Figure 1-6The disassembly mechanism 28 also includes a telescopic rod 286, the outer surface of which is inserted into the inner wall of the spring 283, and both ends are fixedly installed on one side of the locking block 284 and the inner wall of the slide groove 282, respectively. By providing the telescopic rod 286, the inner wall of the spring 283 can be supported and reinforced, making it less prone to damage during use and extending its service life. An anti-slip block, made of rubber, is fixedly installed on the inner wall of the elastic arc block 281. By providing the anti-slip block, the contact friction of the inner wall of the elastic arc block can be increased, making it more secure when fitted onto the outer surface of the traction rod 1 and less prone to wobbling.

[0035] Working principle: Before installing the drawbar 1, manually slide the locking block 284 in the slide groove 282 to one end to a certain position, causing the spring 283 to contract. Then, insert the guide frame 23 and several guide tubes 24 into the groove 25 and several rectangular slots 26 respectively. At this time, release the locking block 284, so that under the reset action of the spring 283, it can be locked into the locking slot 285 to limit and fix the guide frame 23. At the same time, align the elastic arc-shaped block 281 at the bottom of the oil drum 21 with the outer surface of the drawbar 1 and put it on to fix it on the outer surface of the drawbar 1. Lubricating oil is injected into the oil drum 21. Then, when using the tractor to pull agricultural implements and other equipment, the two drawbars 3 will be installed on the side of the tractor's trailing rod and other equipment's trailing rod with bolts and nuts. Then, the two ends of the drawbar 1 are fixed by the limiting pins 4. The two pull rods 1 and 210 are fixed to the inner walls of the two pull frames 3, allowing the pull rod 1 to rotate flexibly around the limiting pins 4 to adapt to different terrains, working angles, and attitude adjustments during travel. This facilitates towing operations. During tractor towing operations, the oil pump 22 can be started to draw the lubricating oil from the oil drum 21 into the guide frame 23 and several guide pipes 24. When the inner walls of both ends of the pull rod 1 rotate on the two limiting pins 4, the ball bearings 27 will rotate on the guide pipes 24, carrying out the lubricating oil inside and applying it to the surface of the limiting pins 4. At the same time, the sponge block 210 will spread the lubricating oil evenly and absorb excess lubricating oil, thereby reducing rotational wear between the two, reducing rotational resistance, making the rotation more flexible, improving work efficiency, reducing the possibility of corrosion and rust, and extending the service life of both.

[0036] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A tractor traction device, comprising a drawbar (1), two drawbar frames (3) and two limiting pins (4), characterized in that: The two ends of the traction rod (1) are fixed in the inner walls of the two traction frames (3) by means of two limiting pins (4). The inner walls of both ends of the traction rod (1) are provided with lubrication devices (2). The lubrication devices (2) can inject lubricating oil into the oil tank (21) and then pump the lubricating oil in the oil tank (21) into the guide frame (23) and several guide pipes (24) by the oil pump (22). When the inner walls of both ends of the traction rod (1) rotate on the two limiting pins (4), the ball (27) is driven to rotate on the guide pipe (24) to carry out the lubricating oil inside.

2. The tractor traction device according to claim 1, characterized in that: The lubrication device (2) includes an oil tank (21) and an oil pump (22), wherein the inlet of the oil pump (22) is installed through the outlet of the oil tank (21) on one side, and the two ends of the traction rod (1) are provided with grooves (25) on one side, and a number of rectangular grooves (26) are provided on one side of the inner wall of the groove (25). A flow guide (23), wherein one end of the flow guide (23) is fixedly installed on one side of the outlet of the oil pump (22); Several guide tubes (24), one end of which is installed through one side of the guide frame (23), and the guide frame (23) and several guide tubes (24) are respectively inserted into the groove (25) and several rectangular slots (26); A portable mechanism, wherein the portable mechanism is disposed between the oil drum (21) and the traction rod (1) and the guide frame (23) and the inner wall of the groove (25), for limiting the oil drum (21) and the guide frame (23) to be mounted on the traction rod (1).

3. A tractor traction device according to claim 2, characterized in that: The lubrication device (2) also includes a number of balls (27), wherein the balls (27) are rolled in the inner wall of the outlet of the guide pipe (24).

4. A tractor traction device according to claim 2, characterized in that: The lubrication device (2) also includes several connecting blocks (29), wherein the two sides of the connecting blocks (29) are respectively fixedly installed on one side of two adjacent guide pipes (24); Several sponge blocks (210), wherein one side of the sponge block (210) is fixedly installed on one side of the connecting block (29).

5. A tractor traction device according to claim 2, characterized in that: The disassembly mechanism (28) includes an elastic arc block (281), wherein the outer surface of the elastic arc block (281) is fixedly installed on one side of the oil drum (21), and the inner wall is sleeved on the outer surface of the traction rod (1). A sliding groove (282) is provided on one side of the inner wall of the groove (25), and a slot (285) is provided on one side of the groove (25). A locking block (284), wherein one end of the locking block (284) is slidably installed in the inner wall of the slide groove (282), and the other end is inserted into the inner wall of the slot (285); Spring (283), wherein the two ends of spring (283) are respectively fixedly installed on one side of the block (284) and the inner wall of the groove (282).

6. A tractor traction device according to claim 5, characterized in that: The disassembly mechanism (28) also includes a telescopic rod (286), wherein the outer surface of the telescopic rod (286) is inserted into the inner wall of the spring (283), and both ends are fixedly installed on one side of the locking block (284) and one side of the inner wall of the slide groove (282).

7. A tractor traction device according to claim 5, characterized in that: The inner wall of the elastic arc-shaped block (281) is fixedly equipped with an anti-slip block, which is made of rubber.

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